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weight <- c(50,55,63,55,67,43,52)

high <- c(150,160,170,175,150,153,165)

mean(weight) #年齡平均數

## [1] 55

Q1 <- quantile(weight, 1 / 4) 
Q2 <- quantile(weight, 2 / 4)

median(weight)

## [1] 55

Q1

## 25% 
##  51

Q2

## 50% 
##  55

plot(weight,high,
     pch = 17,
     col= "skyblue",
     main ="班上的體重與身高",
     xlab ="體重",
     ylab ="身高")

hist(weight,
     col= "lightyellow",
     main ="班上的體重與身高",
     xlab ="體重",
     ylab ="次數")